Query on gumstix Qt programming

Hi, I currently have a small project using the gumstix verdex board and LCD to write a simple snake game. After doing research, we found Qt is the right platform to develop the game. The tutorial in Qt has given me a sense of developing a .ui file for the game GUI in the first step. Then I should use the Qt Creator to implement the game algorithm with the .ui loaded. Is it correct?

I'm a very beginner in Qt programming and will appreciate it a lot if any experienced guy could give me some advice on the approaches to the work. Besides, the Qt website says that there're a lot of example codes. Does anyone know where it the best place to find them?

Thank you very much!